Probability

When two coins are tossed, the possible outcomes are:
\{HH, HT, TH, TT\
So, there are 4 possible outcomes.
(i) Probability of getting at least one head:
The outcomes where at least one head appears are: HH, HT, TH. So, there are 3 favorable outcomes. The total number of outcomes is 4.
The probability of getting at least one head is: (ii) Probability of getting no head (i.e., getting two tails):
The only outcome where no head appears is TT. So, there is 1 favorable outcome. The total number of outcomes is 4.
The probability of getting no head is:

A standard die has six faces, numbered from 1 to 6.
(i) Probability of getting a prime number:
Prime numbers between 1 and 6 are 2, 3, and 5. So, there are 3 favorable outcomes. The total number of outcomes (since the die has 6 faces) is 6.
The probability of getting a prime number is given by: (ii) Probability of getting an odd number:
Odd numbers between 1 and 6 are 1, 3, and 5. So, there are 3 favorable outcomes. The total number of outcomes is still 6.
The probability of getting an odd number is: